Language-specific setting results in settings editor search

[jabacchetta]

Expected Behavior

wordWrap, [markdown], and [] should produce language-specific results in the UI editor. In other words, the [markdown] setting ID should appear, with the "Edit in settings.json" link.

Actual Behavior

Searching for language-specific settings is inconsistent.

In Insiders, it looks like the only way to get language-specific settings to appear in the settings UI editor is to search for a specific setting that is included for that language (e.g. search for wordWrap and [markdown] shows up). You can't search for [markdown] in the UI editor for example. But you can in the JSON editor (with split mode enabled).

In Stable, the results are similar, with one notable exception: you can also search for [] in the JSON editor (with split mode enabled) to get all language-specific settings to appear.

Steps to Reproduce:

1. Open the settings UI editor
2. Search for [markdown] (note that there aren't any results)
3. Open the settings JSON editor (with split mode enabled)
4. Search for [markdown] (note the target result appears)

Environment:

VSCode Version: 1.37.0-insider
OS Version: macOS 10.14.4
Occurs when all extensions are disabled?: Yes

[roblourens]

Yes this is not really supported in the GUI, got #58995 and #74195 for this